Patents by Inventor Asish Bhattacharya

Asish Bhattacharya has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • PROCESS FOR REGIOSELECTIVE DEMETHYLATION OF P-METHOXY GROUP IN PHENOLIC ESTER AND DIARYL KETONE MOIETIES
    Publication number: 20060052463
    Abstract: Demethylation of 3?,4?-dimethoxy or 3?,4?,5?-trimethoxy benzoic ester of a phenol is carried out in the presence of an excess of aluminum halide in an organic solvent to get 4?-Hydroxy, 3?-methoxy or 4? hydroxy, 3?,5?-dimethoxy benzoic acid ester of a phenol. The reaction is also applicable to 3?,4?,5?-trimethoxy diaryl ketone and some natural products like reserpine.
    Type: Application
    Filed: September 8, 2004
    Publication date: March 9, 2006
    Inventors: Arvind Negi, Sunil Chattopadhyay, Sachin Srivastava, Asish Bhattacharya
  • Gallic acid derivative and process of preparing the same
    Publication number: 20050181950
    Abstract: This invention provides a plant growth regulatory activity of a new biologically active synthetic molecule methanone-(3?,4?,5?-trimethoxy) phenyl, 1-naphthyl, 2-O-4?-ethyl but-2?-enoate. More particularly, the invention relates to the potent plant growth promoting activity of a gallic acid derivative having a structure represented by Formula 1 and a molecular formulae C26H26O7. This invention also provides a novel process for preparation of said molecule from a naturally occurring compound and testing it for growth regulating activity using Bacopa test system developed at CIMAP (Khanuja et al., 2001).
    Type: Application
    Filed: August 17, 2004
    Publication date: August 18, 2005
    Inventors: Suman Preet Khanuja, Mahendra Darokar, Ankur Garg, Togarrati Padmapriya, Ajit Shasany, Arvind Negi, Sunia Chattopadhyay, Kachin Srivastava, Asish Bhattacharya